Abstract:
Understanding the causes and consequences of pollinator declines is a priority in ecological research. However, across
much of the globe we have a poor understanding of pollinator assemblages, population trends and the ecological and
economic importance of particular pollinators, due to a marked geographic bias in research eff ort. Here, we show that
almost half the data cited in thirteen recent meta-analyses, which ask important and diverse questions in pollination
ecology, were collected in just fi ve countries: Australia, Brazil, Germany, Spain and the USA. In contrast, the entire
continent of Africa contributed only 4% of the data. We believe that the consequences of this geographic bias are
severe. Foremost, pollinator assemblages (and possibly their sensitivity to ecological drivers) can greatly vary among
these regions. In addition, many communities that rely on pollinators, bees in particular, for food security and wealth
generation are in geographic regions where our understanding of pollination is poor. Collecting accurate information on
pollinator populations in data defi cient areas will allow us to identify vulnerable populations and species and so better
target conservation measures. Moreover, it will help us to determine if our current understanding of pollinator losses,
based on data collected in a few locations and on the species that predominate in those regions, is representative of the
wide diversity of ecosystems. We propose means of collecting such data given socioeconomic constraints.
